Preparation of microporous films from immiscible blends via melt processing

Document Type

Article

Publication Date

10-1-2000

Abstract

Microporous films from immiscible blends were produced via melt processing and post-step treatments. Polystyrene (PS)/polypropylene (PP) and poly(ethylene terephthalate) (PET)/polypropylene blend systems with different viscosity ratios were studied. The blends were first compounded in a co-rotating twin-screw extruder and subsequently extruded through a sheet die to obtain the precursor films. These were uniaxially or biaxially drawn (100-400%) with respect to the original dimension to induce microporous structure and post treated at elevated temperature to maintain the porous structure which consisted of uniform microcracks in the order of a few hundred nanometers. The fabrication process here is shown to be a promising technique for producing microporous films that can be used for liquid and gas separations.

Identifier

0034289614 (Scopus)

Publication Title

Journal of Plastic Film and Sheeting

External Full Text Location

https://doi.org/10.1106/VEHN-PMN3-Q6RE-FUH9

ISSN

87560879

First Page

288

Last Page

299

Issue

4

Volume

16

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